[PATCH] Removing lots of IS_ERR_VALUE abuses and compilation warning.
Arvind Yadav
arvind.yadav.cs at gmail.com
Fri Jul 8 01:12:16 AEST 2016
Passing value in IS_ERR_VALUE() is wrong, as they
pass an 'int' into a function that takes an 'unsigned long'
argument. This happens to work because the type is sign-extended
on 64-bit architectures before it gets converted into an
unsigned type.
Passing an 'unsigned short' or 'unsigned int'
argument into IS_ERR_VALUE() is guaranteed to be broken, as are
8-bit integers and types that are wider than 'unsigned long'.
Any user will get compilation warning for that do not pass an
'unsigned long' argument.
Commit '287980e49f; - This change is alreday fixes lots of other
worst abusers.
Signed-off-by: Arvind Yadav <arvind.yadav.cs at gmail.com>
---
drivers/net/ethernet/freescale/ucc_geth.c | 30 +++++++++++++++---------------
1 file changed, 15 insertions(+), 15 deletions(-)
diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c
index 5bf1ade..c1ead2c 100644
--- a/drivers/net/ethernet/freescale/ucc_geth.c
+++ b/drivers/net/ethernet/freescale/ucc_geth.c
@@ -289,7 +289,7 @@ static int fill_init_enet_entries(struct ucc_geth_private *ugeth,
else {
init_enet_offset =
qe_muram_alloc(thread_size, thread_alignment);
- if (IS_ERR_VALUE(init_enet_offset)) {
+ if (init_enet_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory\n");
qe_put_snum((u8) snum);
@@ -2234,7 +2234,7 @@ static int ucc_geth_alloc_tx(struct ucc_geth_private *ugeth)
ugeth->tx_bd_ring_offset[j] =
qe_muram_alloc(length,
UCC_GETH_TX_BD_RING_ALIGNMENT);
- if (!IS_ERR_VALUE(ugeth->tx_bd_ring_offset[j]))
+ if (!ugeth->tx_bd_ring_offset[j])
ugeth->p_tx_bd_ring[j] =
(u8 __iomem *) qe_muram_addr(ugeth->
tx_bd_ring_offset[j]);
@@ -2311,7 +2311,7 @@ static int ucc_geth_alloc_rx(struct ucc_geth_private *ugeth)
ugeth->rx_bd_ring_offset[j] =
qe_muram_alloc(length,
UCC_GETH_RX_BD_RING_ALIGNMENT);
- if (!IS_ERR_VALUE(ugeth->rx_bd_ring_offset[j]))
+ if (!ugeth->rx_bd_ring_offset[j])
ugeth->p_rx_bd_ring[j] =
(u8 __iomem *) qe_muram_addr(ugeth->
rx_bd_ring_offset[j]);
@@ -2521,7 +2521,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
ugeth->tx_glbl_pram_offset =
qe_muram_alloc(sizeof(struct ucc_geth_tx_global_pram),
UCC_GETH_TX_GLOBAL_PRAM_ALIGNMENT);
- if (IS_ERR_VALUE(ugeth->tx_glbl_pram_offset)) {
+ if (ugeth->tx_glbl_pram_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_tx_glbl_pram\n");
return -ENOMEM;
@@ -2541,7 +2541,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
sizeof(struct ucc_geth_thread_data_tx) +
32 * (numThreadsTxNumerical == 1),
UCC_GETH_THREAD_DATA_ALIGNMENT);
- if (IS_ERR_VALUE(ugeth->thread_dat_tx_offset)) {
+ if (ugeth->thread_dat_tx_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_thread_data_tx\n");
return -ENOMEM;
@@ -2568,7 +2568,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
qe_muram_alloc(ug_info->numQueuesTx *
sizeof(struct ucc_geth_send_queue_qd),
UCC_GETH_SEND_QUEUE_QUEUE_DESCRIPTOR_ALIGNMENT);
- if (IS_ERR_VALUE(ugeth->send_q_mem_reg_offset)) {
+ if (ugeth->send_q_mem_reg_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_send_q_mem_reg\n");
return -ENOMEM;
@@ -2609,7 +2609,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
ugeth->scheduler_offset =
qe_muram_alloc(sizeof(struct ucc_geth_scheduler),
UCC_GETH_SCHEDULER_ALIGNMENT);
- if (IS_ERR_VALUE(ugeth->scheduler_offset)) {
+ if (ugeth->scheduler_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_scheduler\n");
return -ENOMEM;
@@ -2656,7 +2656,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
qe_muram_alloc(sizeof
(struct ucc_geth_tx_firmware_statistics_pram),
UCC_GETH_TX_STATISTICS_ALIGNMENT);
- if (IS_ERR_VALUE(ugeth->tx_fw_statistics_pram_offset)) {
+ if (ugeth->tx_fw_statistics_pram_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_tx_fw_statistics_pram\n");
return -ENOMEM;
@@ -2693,7 +2693,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
ugeth->rx_glbl_pram_offset =
qe_muram_alloc(sizeof(struct ucc_geth_rx_global_pram),
UCC_GETH_RX_GLOBAL_PRAM_ALIGNMENT);
- if (IS_ERR_VALUE(ugeth->rx_glbl_pram_offset)) {
+ if (ugeth->rx_glbl_pram_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_rx_glbl_pram\n");
return -ENOMEM;
@@ -2712,7 +2712,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
qe_muram_alloc(numThreadsRxNumerical *
sizeof(struct ucc_geth_thread_data_rx),
UCC_GETH_THREAD_DATA_ALIGNMENT);
- if (IS_ERR_VALUE(ugeth->thread_dat_rx_offset)) {
+ if (ugeth->thread_dat_rx_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_thread_data_rx\n");
return -ENOMEM;
@@ -2733,7 +2733,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
qe_muram_alloc(sizeof
(struct ucc_geth_rx_firmware_statistics_pram),
UCC_GETH_RX_STATISTICS_ALIGNMENT);
- if (IS_ERR_VALUE(ugeth->rx_fw_statistics_pram_offset)) {
+ if (ugeth->rx_fw_statistics_pram_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_rx_fw_statistics_pram\n");
return -ENOMEM;
@@ -2753,7 +2753,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
qe_muram_alloc(ug_info->numQueuesRx *
sizeof(struct ucc_geth_rx_interrupt_coalescing_entry)
+ 4, UCC_GETH_RX_INTERRUPT_COALESCING_ALIGNMENT);
- if (IS_ERR_VALUE(ugeth->rx_irq_coalescing_tbl_offset)) {
+ if (ugeth->rx_irq_coalescing_tbl_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_rx_irq_coalescing_tbl\n");
return -ENOMEM;
@@ -2819,7 +2819,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
(sizeof(struct ucc_geth_rx_bd_queues_entry) +
sizeof(struct ucc_geth_rx_prefetched_bds)),
UCC_GETH_RX_BD_QUEUES_ALIGNMENT);
- if (IS_ERR_VALUE(ugeth->rx_bd_qs_tbl_offset)) {
+ if (ugeth->rx_bd_qs_tbl_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_rx_bd_qs_tbl\n");
return -ENOMEM;
@@ -2905,7 +2905,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
ugeth->exf_glbl_param_offset =
qe_muram_alloc(sizeof(struct ucc_geth_exf_global_pram),
UCC_GETH_RX_EXTENDED_FILTERING_GLOBAL_PARAMETERS_ALIGNMENT);
- if (IS_ERR_VALUE(ugeth->exf_glbl_param_offset)) {
+ if (ugeth->exf_glbl_param_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_exf_glbl_param\n");
return -ENOMEM;
@@ -3039,7 +3039,7 @@ static int ucc_geth_startup(struct ucc_geth_private *ugeth)
/* Allocate InitEnet command parameter structure */
init_enet_pram_offset = qe_muram_alloc(sizeof(struct ucc_geth_init_pram), 4);
- if (IS_ERR_VALUE(init_enet_pram_offset)) {
+ if (init_enet_pram_offset < 0) {
if (netif_msg_ifup(ugeth))
pr_err("Can not allocate DPRAM memory for p_init_enet_pram\n");
return -ENOMEM;
--
1.9.1
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